Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
trong dang » truong dang, trong dan, trong dong
trung cua » truong cua, trung cap, dung cua
dang phan » dung phan, nang phan, dang phat
chi hanh » chi nhanh, chi thanh, thi hanh
phan dau » phan tu, hang dau
doi chi » doi khi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi hanh - hanh ((trung cua) or (trung tuan)) dung trong dang phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi hanh - hanh ((trung cua) OR (trung tuan)) dung trong dang phan dau.
• Adding a wildcard symbol may retrieve word variants: doi chi hanh - hanh ((trung cua) or (trung tuan)) dung trong dang phan dau*.